Return

Object — the element's attributes

getChild(childIndex)

Retrieves the child element at the specified child index.

// Get the body section of the active document.
var body = DocumentApp.getActiveDocument().getBody();
// Obtain the first element in the document.
var firstChild = body.getChild(0);
// If it's a paragraph, set its contents.
if (firstChild.getType() == DocumentApp.ElementType.PARAGRAPH) {
firstChild.asParagraph().setText("This is the first paragraph.");
}

getNextSibling()

Return

getNumChildren()

Retrieves the number of children.

// Get the body section of the active document.
var body = DocumentApp.getActiveDocument().getBody();
// Log the number of elements in the document.
Logger.log("There are " + body.getNumChildren() +
" elements in the document body.");